JPS5853238Y2 - Centralized warning system for vehicles - Google Patents

Description

[Detailed explanation of the invention] This invention determines the quality of each inspection part that needs to be inspected for safe driving of the vehicle, and displays the determination results centrally, for example, at the driver's door. This invention relates to a central warning system for a vehicle that issues a warning and checks whether its determination function or display function can operate normally before driving.

A conventional central warning system for vehicles of this type is shown in FIGS. 1 and 2.

The conventional example shown in FIG. 1 is a so-called multi-window display centralized warning system for vehicles in which a plurality of display items are displayed through independent display windows, and in FIG.
..., 1n is a sensor that is attached to each part that needs to be inspected for safe driving of the vehicle, and converts the pass/fail status of the inspected part into a digital electrical signal and detects a defect in the inspected part. If there is, for example, a high-level defect signal is output.

The sensors 10, 12. ..., the electric signal from 1n is connected to the or game provided corresponding to each sensor) 21 t 22
t..., 2n to corresponding interface circuits 31, 3□, . . . , 3n, respectively.

The interface circuit 3. 32, . . . , 3n convert the supplied signal into a signal suitable for the next stage determination circuit 5 and output it.

5 is a determination circuit, and the interface circuit 30, 3□
.

..., 3n, respectively.

5□, . It is determined whether or not this indicates that there is a defect in the inspected portion, and if it is determined that there is a defect in the inspected portion, a defect determination signal is output.

61° 62, ..., 6n are display drivers, which are driven by the defective judgment signals from the judgment circuits 5□, 5□, ..., 5n, and energize the multi-window display 1 in the next stage. do.

7 is a multi-window display, and the sensors 11, 1□, . . .

A plurality of display devices 71.1n corresponding to each one. γ2゜...
, 1n, each indicator is a combination of a lens with letters or designs indicating each inspected area and an illumination lamp, and the illumination lamp is turned on when the indicator driver 61 * 62° . . . , 6n is driven. The display is configured so that a predetermined display is displayed.

The above is the configuration necessary to warn of defects in each inspected part of the vehicle. Below, a mechanism for checking whether the determination function and display function can operate normally before driving will be explained.

The checking mechanism is composed of a timer circuit indicated by reference numeral 88' in FIG. 1 and a pseudo-failure signal generation circuit indicated by reference numeral 11. Fixed time T
.

, and outputs a timer signal that activates the pseudo-failure signal generation circuit 11 during the operation.

Therefore, the operation time of the pseudo failure signal generating circuit 110 is directly determined by the timer circuit.

The pseudo failure signal generating circuit 11 detects the sensors 0, 12 . . . . outputs a pseudo-defective signal electrically equivalent to the defective signal from 1n, and sends the signal to the OR gate 20.
, 2□, . . . , 2n to the interface circuits 30, 3□, .

3n.

Incidentally, reference numeral 12 is a starter motor, and 14 is a battery.

Next, to explain the operation of the multi-window display vehicle centralized warning system with such a configuration, when you get into the vehicle and turn the ignition switch 13 to the on position, the timer circuit 8a' starts operating, and accordingly, a false fault is detected. Signal generation circuit 11
A pseudo-defective signal begins to be output.

If the defective signal is, for example, a bilevel signal, the pseudo defective signal becomes a bilevel signal, so that the sensor i1. i
2. ..., or game with priority over the electrical signal from 1n)
28,2□,...

2 to each interface circuit 31t 32t...
・.

3n.

Each interface circuit 3. . 3□, ..., 3n are
Each judgment circuit 51, 5□ converts the pseudo-defective signal as appropriate.
, ..., 5n, but since the pseudo defective signal is electrically equivalent to the defective signal, each determination circuit 51, 5□,
. . , 5n outputs a defective determination signal in the same way as when the defective signal is supplied.

The defective judgment signal is sent to each display driver 61.6□,...
, 6n, and as a result, if at least one of the OR gate, interface circuit, determination circuit, display driver, and display does not operate normally, the above series of actions will not be performed, and as a result, the display will not operate as specified. This means that the circuit will not be displayed, allowing you to check the circuit.

In this circuit check, the timer circuit 8a' is set to a predetermined timer time T.

This operation continues until the operation of the pseudo-defective signal generation circuit 11 is completed and the generation of the pseudo-defective signal from the pseudo-defective signal generation circuit 11 stops.

After that, each sensor 10, 1□・until the ignition switch 13 is returned to the accessory position or the off position
..., determines the quality of each inspected part based on the electrical signals from 1n, and centrally displays the determination results.

In addition, the conventional example shown in FIG. 2 is a so-called window-hole display centralized warning system for vehicles that displays multiple display items in a time-sharing manner through a single display window, and is similar to the conventional example shown in FIG. Components having the same configuration as the example are given the same reference numerals, and the explanation thereof will be omitted.

In FIG. 2, 4 and 4' are switching circuits, and the switching circuit 4 is interposed between the interface circuits 31, 3□, . The other switching circuit 4' is interposed between the judgment circuit 5' and the display driver 61.6□, . display driver 61, 6□,...
, 6n are sequentially switched and supplied.

The switching operation of the switching circuits 4 and 4' is performed internally every time the output of the flip-flop 7"IO to which the oscillation output from the oscillation circuit 9 is supplied rises from low level to bi level or falls from bi level to low level. The switching contacts are controlled to advance one by one, and since they are controlled by a common flip-flop output, their operation is synchronous.

Therefore, for example, the switching circuit 4 is connected to the interface circuit 31.
When the output terminal of the determination circuit 5' is connected to the input terminal of the determination circuit 5', the other switching circuit 4' operates to connect the output terminal of the determination circuit 5' and the input terminal of the display driver 610.

Further, the switching circuit 4 is configured to supply a cancel signal to a pseudo-failure signal generating circuit 11' (to be described later) to stop its operation if it is operating, every time the switching operation completes one cycle.

T' is a unique type display, for example, a plurality of display boards are laminated with letters or designs indicating the inspection area by carving a notch-shaped reflective part on the back side of a transparent board, and each display board is A plurality of display devices 7/ having a light source that supplies irradiation light on the side surface
1.712. ... It is composed of 7/.

8'b is a timer circuit whose timer time is set to the time required to display one item, and which is supplied with a start signal in synchronization with the output of the defective judgment signal from the judgment circuit 5'. During the operation, the oscillation circuit 9 is controlled so that no oscillation signal is output, thereby fixing the switching operation of the switching circuits 4 and 4'.

Reference numeral 11' denotes a pseudo-failure signal generation circuit, which operates from when the ignition switch 13 is turned on to when the cancel signal is input from the switching circuit 4, and generates a pseudo-fault signal electrically equivalent to the fault signal during its operation. or gate 21,2
2. ..., 2n to each inter-7 chair circuit 3
1, 3□, ..., 3n.

Therefore, the operating time of the pseudo-failure signal generating circuit 11' is indirectly determined by the timer circuit 8b' since the time until the switching circuit 4 outputs the cancel signal is determined by the timer circuit 8b'. That will happen.

Next, the operation of the central warning system for a vehicle having a unique display having such a structure will be explained. When the ignition switch 13 is turned on, the pseudo fault signal generation circuit 11' starts outputting a pseudo fault signal.

The pseudo-failure signal is given priority over the electrical signals from the sensors 11?1□, . . . tln to the OR gates 20,2□.

..., 2n to each interface circuit 31, 3□.

..., 3n.

Each interface circuit 38, 3□, . . . , 3n outputs a pseudo-defective signal that has been appropriately converted, but the switching circuit 4 is in a state where one input terminal and output terminal with the switching contact are connected. Therefore, only the pseudo-defective signal supplied to that one input terminal is supplied to the determination circuit 5'.

Since the pseudo failure signal supplied to the determination circuit is electrically equivalent to the failure signal, the determination circuit 5' outputs a failure determination signal.

The defect determination signal is transmitted to a plurality of display drivers 61t6 via another switching circuit 4' whose switching operation is synchronized with the switching circuit 4.
2t..., 6n, one interface circuit 31, 3□ supplies a pseudo-defective signal to the determination circuit 5'.

. . , or only those compatible with 3n.

As a result, one display driver 61, 62 . ..., 6n is driven, and one display 7' corresponding to it is 1.772°... or? When n' is energized and a predetermined display is made, a certain OR gate, a certain interface circuit,
If at least one of the circuit systems of one switching contact with a switching circuit, the judgment circuit, one switching contact with another switching circuit, one display driver, and one display does not operate normally. , a certain display device will not perform a predetermined display, and this will enable a circuit check of that circuit system.

This circuit check is continued for the timer time of the timer circuit 8b', but once the operation of the timer circuit 8b' is finished, the oscillation circuit 9 starts oscillating, and the switching circuits 4 and 4' is supplied with a signal that advances the switching contact by one.

When the switching contacts of the switching circuits 4 and 4' are advanced by one, the circuit check described above is carried out for another circuit system.

In this way, circuit checks of all circuit systems are performed in a time-sharing manner, and when the checks are completed, a cancel signal is supplied from the switching circuit 4 to the pseudo-failure signal generation circuit 11', and the generation of pseudo-failure signals is stopped. .

After that, each sensor 11 * 12 is operated until the ignition switch 13 is returned to the accessory position or the off position.
Based on electrical signals from t..., 1n, the quality of each inspected part is determined in a time-division manner by being driven by an oscillation circuit 9, and the results are displayed centrally.

By the way, in the conventional vehicle centralized warning system described above, as shown in FIG. 5C, the timer circuit 88' or 8
b' is operating continuously or intermittently, the ignition switch 13 is turned to the start position as shown in FIG. 5, and if the circuit check and cranking overlap, the battery 14 The disadvantage is that the display becomes dark and difficult to confirm as the terminal voltage drops.

In addition, the driver may be distracted by the engine running and may overlook the display.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and provides a central warning system for a vehicle in which the operation of each circuit of the central warning system can be checked before driving, avoiding the cranking time. The purpose is to

A first embodiment of the present invention will be described in detail below with reference to FIG.

This embodiment is a vehicle centralized warning system with a multi-window display similar to the conventional example shown in FIG. 1, and the same components as the conventional example shown in FIG. omitted.

In FIG. 3, a timer circuit indicated by reference numeral 8a operates for a certain period of time T after the ignition switch 13 is turned on.

The timer operation starts the timer operation, but the timer operation can be temporarily stopped, and when the timer operation is stopped, the output is held or the timer operation can be reset.

A timer control circuit 15 operates while the ignition switch 13 is in the start position and controls the timer circuit 8a to temporarily stop or reset the timer operation.

Therefore, according to this configuration, when the ignition switch 13 is turned on as shown in FIG. As explained in the conventional example shown in FIG.

When the ignition switch 13 is turned to the start position as shown in FIG. 5, for example, when i of the timer time To has elapsed before the timer control circuit 1 has finished, the timer control circuit 1
5 is activated, during which the timer operation of the timer circuit 8a is temporarily stopped, and the timer time stops advancing and its output is held or the timer operation of the timer circuit 8a is reset.

Thereafter, when cranking is finished and the ignition switch 13 is returned to the on position, the operation of the timer control circuit 15 is stopped, and the timer circuit 8a continues the remaining timer time iT as shown in FIG. 5d.

or restart the timer operation for the timer period T as shown in FIG. 5e.

The timer operation is restarted and the circuit check is restarted.

Next, a second embodiment will be explained in detail based on FIG. 4.

This embodiment is a vehicle centralized warning system with a unique display similar to the conventional example shown in FIG. 2, and those having the same configuration as the conventional example shown in FIG. Omitted.

In FIG. 4, the timer circuit indicated by reference numeral 8b has its timer time set to the time required to display one item, but the timer operation can be temporarily stopped, and
The output when the timer operation is temporarily stopped is held.

A timer control circuit 15 operates while the ignition switch 13 is in the start position, and controls the timer circuit 8b to temporarily stop the timer operation.

Therefore, according to this configuration, when the ignition switch 13 is turned to the on position as shown in FIG. 5a,
Based on the pseudo-failure signal from the pseudo-failure signal generation circuit 11', a predetermined circuit check is started as explained in the conventional example shown in FIG. For example, the time T required to check the entire circuit system before the check is completed.

(Here, for convenience of explanation, To corresponds to the timer time of the above embodiment).

), when the ignition switch 13 is turned to the start position as shown in FIG. The process is temporarily stopped, the progress of the circuit check is stopped, and the circuit check at that time is held.

After that, when cranking is finished and the ignition switch 13 is returned to the on position, the operation of the timer control circuit 15 is stopped, the timer circuit 8b resumes the timer operation, and the fifth
Remaining time-HT as shown in Figure f.

circuit check is started. As explained above, the present invention consists of sensors □, 12. ..., 1n, and a determination circuit 5 or 5' that outputs a defect determination signal when the sensor outputs a defect signal indicating that there is a defect in the inspected area.
and is energized by a defect determination signal from the determination circuit,
Display device 7 or 7 that intensively displays defects in the inspection area
', a pseudo-fault signal generating circuit 11 or 11' that outputs a pseudo-failure signal electrically equivalent to the fault signal to the determination circuit 5 or 5' when the ignition switch 13 is turned on; A timer circuit 8a or 8b that directly or indirectly determines the operating time of the signal generation circuit, and a timer control circuit 15 that stops the operation of the timer circuit 8a or 8b while the ignition switch 13 is in the start position. According to the present invention, it is possible to issue a warning while avoiding cranking, thereby eliminating the problem that the brightness of the display decreases due to a decrease in battery voltage. It never occurs.

In addition, there is no risk of overlooking the display due to being distracted by the running condition of the engine, which is extremely useful for safe driving.

[Brief explanation of drawings]

1 and 2 are block diagrams of a conventional central warning system for vehicles, FIGS. 3 and 4 are block diagrams of first and second embodiments of the central warning system for vehicles according to this invention, and FIG. The figure is a time chart for explanation. 11t12t..., 1n...sensor, 21.22
. ..., 2n...or gate, 38,3□,...
3n...Interface circuit, 4,4'...Switching circuit, 5゜5'...Judgment circuit, 61,6□,...,
6n...Display device driver, 7, 7'-...Display device,
8a t8by8a'p8b'...Timer circuit, 9
...Oscillation circuit, 10...Flip-flop, 11.
11'... Pseudo defect signal generation circuit, 12... Starter motor, 13... Ignition switch, 14...
··Battery.

Claims (1)

[Scope of utility model registration request] Sensors 1□, 12. which convert the quality of inspected parts of the vehicle into electrical signals and output them. . . . In, a determination circuit 5 or 5' that outputs a defect determination signal when the sensor outputs a defect signal indicating that there is a defect in the inspected part, and a determination circuit 5 or 5' that outputs a defect determination signal according to the defect determination signal from the determination circuit. an indicator γ or 1′ that is energized and intensively displays defects in the inspected area;
a pseudo-fault signal generating circuit 11 or 11' that outputs a pseudo-failure signal electrically equivalent to the fault signal to the determination circuit 5 or 5' when the ignition switch 130 is turned on; It includes a timer circuit 8a or 8b that directly or indirectly determines the operating time, and a timer control circuit 15 that stops the operation of the timer circuit 8a or 8b while the ignition switch 13 is in the start position. A central warning device for vehicles characterized by the following.